kyu = [2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 0]
x = int(input())
for k, num in enumerate(kyu):
    if num > x >= kyu[k+1]:
        print(k + 1)
        break kyu = [2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 0] kyu [2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 0] 2000 1800 1600 1400 1200 1000 800 600 400 0 x = int(input()) x int(input()) int input() input for k, num in enumerate(kyu):
    if num > x >= kyu[k+1]:
        print(k + 1)
        break k num enumerate(kyu) enumerate kyu if num > x >= kyu[k+1]:
        print(k + 1)
        break num > x >= kyu[k+1] num > x num x kyu[k+1] kyu k+1 k 1 print(k + 1) print k + 1 k 1 break kyu = [2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 0] [2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 0] kyu x = int(input()) int(input()) x
kyu = [2000, 1800, 1600, 1400, 1200, 1000, 800, 600, 400, 0]
x = int(input())
for k, num in enumerate(kyu):
    if num > x >= kyu[k+1]:
        print(k + 1)
        break